question

branden-van-der-colff avatar image
branden-van-der-colff asked

Victron MPPT 150/35 not powering up when connected to batteries only

Hi everyone,

I was wondering if anyone else has experienced a similar problem, and maybe found a solution. I recently acquired a BlueSolar 150/35 MPPT, brand new and updated to the latest firmware, however the device seems unable to power up when connected to batteries only. The moment the solar power is removed, the entire unit switches off. This is especially cumbersome at night, when solar is not available.
Any advice will be greatly appreciated.

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klim8skeptic answered ·

Very early versions of this mppt were powered from the PV array only.

What is the first 6 of the serial number? XXYYWW last 4 is year / week.

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branden-van-der-colff avatar image branden-van-der-colff commented ·
HQ21257P9A3
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klim8skeptic avatar image klim8skeptic ♦ branden-van-der-colff commented ·
Last year, should power on.


The only power on indication will be a brief flash of the blue bulk led every 4-5 seconds, without pv input.
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